Caterpillar 3406C Marine Engine — Install Fuel Injection Pump & Governor Drive
Adjustments
For the Caterpillar 3406C Marine Engine, from the Caterpillar service manual.
Applies to: Caterpillar 3406C engine
Procedure
- Remove plug and put Tool (A) in the timing pin hole.
- Install two 7/16-20 NF x 102 mm bolts in the camshaft; rotate until Tool (A) enters the groove; remove bolts.
- Put No. 1 piston at top center compression position using Tool (B) and the timing bolt.
- Remove timing bolt and rotate engine opposite normal rotation a minimum of 30 degrees.
- Put gear (4) in position on the fuel injection pump camshaft.
- Put ring (5) in position and install four bolts; tighten to 3 N·m (27 lb in).
- Rotate engine in normal rotation until the timing bolt can be installed in the flywheel.
- Tighten the ring bolt to 55 ± 7 N·m (41 ± 5 lb ft).
- Remove Tool (A) and the timing bolt.
- Check timing: rotate two full turns, install Tool (A) and timing bolt; correct if both install at same time.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 3 N·m (27 lb in)
- 55 ± 7 N·m (41 ± 5 lb ft)
Full service-parts list: Caterpillar 3406C engine →
Source: Caterpillar service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.